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CN101915551A - Non-contact on-line detection device of micro gap of wire wrapped screen - Google Patents

Non-contact on-line detection device of micro gap of wire wrapped screen Download PDF

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CN101915551A
CN101915551A CN 201010215431 CN201010215431A CN101915551A CN 101915551 A CN101915551 A CN 101915551A CN 201010215431 CN201010215431 CN 201010215431 CN 201010215431 A CN201010215431 A CN 201010215431A CN 101915551 A CN101915551 A CN 101915551A
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wrapped
unit
screen
wire
line
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CN 201010215431
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Chinese (zh)
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CN101915551B (en )
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冯绪勇
夏俞扬
张爱武
朱林林
胡少兴
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北京航空航天大学
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Abstract

The invention relates to a non-contact on-line detection device of a micro gap of a wire wrapped screen, mainly comprising an image collection unit, a laser vibration measurement unit, an imaging focusing unit and a host computer unit. The device uses the image collection unit to carry out real-time high-quality imaging on the micro gap of the wire wrapped screen, uses the laser vibration measurement unit to solve the influence of radial vibration on an imaging coefficient of the wire wrapped screen in the on-line processing process, calls an imaging coefficient base which is standardized in advance to resolve the micro gap of the wire wrapped screen, calculates a relative error, counts the unqualified rate of gap processing on line and judges whether the wire wrapped gap accords with an expected requirement or not. The imaging focusing unit is suitable for detecting screen gaps of various types. The invention forms a closed loop control processing system by butting an actual wire wrapped screen production line of a factory and has an important significance on on-line revising technological parameters of production, enhancing product indexes, abandoning an unqualified production section at an early date and reducing raw material waste.

Description

一种绕丝筛管微小缝隙的非接触在线检测装置 A device for detecting the non-contact-line wire wrapped slight gap

技术领域 FIELD

[0001] 本发明涉及非接触测量技术,具体地涉及一种绕丝筛管微小缝隙的非接触在线检测装置。 [0001] The present invention relates to non-contact measurement techniques, particularly to a non-line detection means small gap one kind of wire wrapped screen contact.

背景技术 Background technique

[0002] 绕丝筛管是油田勘探开发中使用的机械部件,其在原油防砂中起着重要作用;绕丝筛管由内部拉直的若干条平行轮毂及外部缠绕的筛丝组成,筛丝相互之间的毫米级微小缝隙即为防砂过油的重要关卡;在实际加工过程中,轮毂被拉直固定,在生产线上以一定速度做轴向移动与周向旋转,筛丝即时缠绕在轮毂上,在焊机的作用下与轮毂焊接相连。 [0002] a wire wrapped screen is the mechanical member used in oil exploration and development, which plays an important role in the oil sand; straightening wire wrapped several internal hub and the outer parallel-wound filaments screen, the screen wires millimeters from each other is the small gap between the sand oil level is important; the actual machining process, the hub is fixed straightened, make a constant speed in the production line with the circumferential movement of the axial rotation of the screen wire is wound around the hub instant on, under the effect of welding the welding is connected to the hub.

[0003] 绕丝筛管微小缝隙的非接触在线检测是控制筛管加工质量的前提。 [0003] small gap silk screen a non-contact line around the detector is provided to control the quality of the screen processing. 目前筛管缝隙检测主要采用手工塞规方式进行离线测量,该方法检测效率低、精度差、人员易疲劳出错、 测量操作不方便,同时由于离线测量,造成对原材料的浪费。 Currently the main screen gap detection manner using manual plug gauge measured off-line, the method detects low efficiency, poor accuracy, fatigue wrong person, the measuring operation is not convenient, and because the off-line measurement, resulting in waste of raw materials. 因此,迫切需要一种绕丝筛管微小缝隙的非接触在线检测装置,满足筛管加工生产的要求。 Accordingly, there is a need for a wire wrapped small gap line non-contact detection means to meet the requirements of screen processing.

发明内容 SUMMARY

[0004] 本发明的技术解决问题:克服现有技术的不足,提供一种绕丝筛管微小缝隙的非接触在线检测装置,可以实现非接触在线闭环检测,且检测速度快,检测精度高;本发明有效解决了筛管在线生产时径向振动对检测精度的影响问题,且装置适用于不同外径尺寸绕丝筛管微小缝隙的检测。 [0004] The techniques of the present invention to solve the problem: to overcome the deficiencies of the prior art by providing a device for detecting the non-contact-line wire wrapped small gap can be closed non-contact detection line, and detection speed, high precision; the present invention effectively solves the problem of the influence of radial vibration detection precision screen production line, and means adapted to detect different outer diameter wire wrapped slight gap.

[0005] 本发明的技术解决方案:1、一种绕丝筛管微小缝隙的非接触在线检测装置,包括: 图像采集单元、激光测振单元、成像对焦单元及上位机单元,其中 [0005] The technical solution of the invention is: 1, a device for detecting the non-contact-line wire wrapped small gap, comprising: an image acquisition unit, a laser vibrometer unit, an imaging unit and a host computer focusing means, wherein

[0006] 图像采集单元,实现对被测筛管微小缝隙的真实放大成像,它包括面阵工业相机、 转接口、显微镜头、球积分光源及图像采集卡;其中面阵工业相机与显微镜头通过转接口相连;球积分光源罩在显微镜头前端,实现对筛管缝隙成像的高亮度照明;图像采集卡通过数据线与面阵工业相机连接,从面阵工业相机获取被测筛管的模拟图像,该模拟图像信号经A/D转换传送给上位机单元进行处理、存储和传输;图像采集单元中的图像采集卡安装在上位机单元中的PCI插槽中,图像采集单元的其余部件则布置在成像对焦单元上; [0006] The image acquisition unit, to realize real enlarged image of the measured small gap screen, comprising the industrial area array camera, switch interface, microlenses, and light integrating sphere image acquisition card; industrial area array wherein the camera head through the microscope is connected to switch interface; integrating sphere light source cover the front end of the microscope head, to achieve high brightness illumination of the imaged slit screen; an image acquisition card connected via a data line and industrial area array camera, an analog image acquired from the screen test area array camera industrial the analog image signals are processed, stored and transmitted to the host computer unit a / D converter via the transmission; the PCI slots image acquisition unit of the image acquisition card installed in the PC unit, the remaining components of the image acquisition unit is arranged focus on the imaging unit;

[0007] 激光测振单元,用于精确测量当前所测筛管位置与图像采集单元的距离值,它包括激光测距仪、485/232转接口及RS232串口线,激光测距仪测量出当前所测筛管位置与图像采集单元的距离值后通过485/232转接口和RS232串口线反馈给上位机单元,从而辅助上位机单元决策出当前图像采集单元的成像系数,解决绕丝筛管实际在线加工过程中径向振动对成像规律的影响问题; [0007] Laser vibrometer means for accurate measurement of the position of the image screen distance value acquisition unit currently measured, it comprises a laser rangefinder, 485/232 and RS232 serial interfaces, measuring the current laser rangefinder after the feedback value from the screen position of the image acquisition unit measured by the 485/232 and RS232 serial transfer interface to the host computer unit, so as to assist the decision of the imaging unit PC coefficients of the current image acquisition unit, wire-wrapped screens practical solution line processing radial vibrations impact imaging laws;

[0008] 成像对焦单元,实现图像采集单元及激光测振单元的径向移动,从而实现不同型号筛管微小缝隙的高质量成像;它包括运动控制器、交流伺服电机、伺服驱动器、高精度滚珠丝杠及相应联轴器、光栅尺、限位开关、基座、运动滑块及可与图像采集单元、激光测振单元装配的连接装置;其中运动控制器为可编程逻辑控制器PLC,输出高速脉冲给交流伺服 [0008] The image focusing means, to achieve the radial movement of the image acquisition unit and a laser vibrometer unit, thereby realizing the small gap different models high quality imaging screen; it comprises a motion controller, servo motors, servo drives, precision ball and the corresponding screw coupling, grating, limit switches, base, and movement of the slider with the image acquisition unit, a laser vibrometer unit mounting means is connected; wherein the motion controller is a programmable logic controller PLC, output High-speed pulse to the AC servo

4驱动器,并通过信号转接器接受来自于光栅尺动尺读数头的信号;伺服驱动器直接驱动交流伺服电机的运行,进而带动高精度滚珠丝杠转动,使得滑块及装配其上的图像采集单元和激光测振单元发生平移,实现装置对不同外径筛管的对焦成像功能; 4 drives, and by receiving a signal from the adapter movable grating scale signal readhead; direct drive servo drive to run the AC servo motor so as to drive the ball screw is rotated with high precision, so that the image acquisition assembly thereof on the slider and vibration means and the laser unit is translated, means to realize an imaging function for focusing screen of different outer diameters;

[0009] 上位机单元,控制整个装置的运行,包括上位机硬件及控制软件,它分别通过计算机接口与上述三个单元通信,实现图像采集单元中相机的参数设置、图像数据的获取、分析与存储;激光测振单元中测距仪的初始化设置与数据接收,及成像对焦单元的定位控制; 上位机单元中还封装了缝隙的检测算法,综合上述各单元获取的信息进行绕丝筛管缝隙值的解算,缝隙相对误差的求取、不合格率统计,并提供图像显示、实时报警、数据入库功能。 [0009] The host computer unit to control the operation of the entire apparatus, including PC hardware and control software, which are three computer interface unit communicates with the through image acquisition unit carries out a parameter of the camera, the image data acquired, and analysis memory; rangefinder laser vibrometer initialization unit is provided with data reception image focusing means and the positioning control; PC unit also encapsulates the gap detection algorithm, each of the integrated information acquiring unit is wire wrapped screen slot resolver values, the gap is obtained relative error, failure rate statistics, and to provide an image display, real-time alarm, a data storage function.

[0010] 所述的面阵工业相机采用2kXlk以上分辨率,30f/s以上帧频,单像元横向尺寸大于5um的黑白相机;高分辨率使得检测装置具有较大的视场,提高像元尺寸可以充分展现被测物细节,较高的帧频才能降低实际加工的运动模糊影响,从而实现对筛管缝隙的高质量成像。 Industrial plane array camera [0010] The use of the above resolution 2kXlk, 30f / s or more frame rate, greater than the transverse dimension of a single pixel black and white camera 5um; high resolution so that the detection means has a larger field of view, increase the pixel size may be full of details of the analyte, higher frame rate in order to reduce motion blur influence the actual processing, thereby realizing high-quality imaging screen slit.

[0011] 所述显微镜头为放大倍率在X 1.5以上,最大兼容CXD靶面在2/3英寸以上,工作距离在50-100mm间的C 口光学镜头,可以实现对微小缝隙的真实放大聚焦,为高精度检测的实现打下基础。 [0011] The head of the microscope magnification X 1.5 or more, the maximum compatible CXD 2/3 inches above the target surface, the working distance between the C port 50-100mm optical lens, focusing may be implemented on a real amplification of the small gap, the foundation for high-precision detection.

[0012] 所述球积分光源为具有碗状内壁以及顶部具有仿同轴照射的白色高亮度光源,其碗状内壁可以均勻反射从底部发射的光线,使被测筛管表面的照度均勻,缝隙边缘成像清晰。 [0012] The integrating sphere having a light source is bowl-shaped inner wall of the top of a white light source having a high brightness imitation coaxial illumination, bowl-shaped inner walls which reflected light can be uniformly emitted from the bottom surface of the screen illuminance measured uniform gap edge clear image.

[0013] 所述图像采集卡为具有CameraLink数字接口的数据到主机传输速率大于200MB/ s的高速采集卡,实现对高帧频工业相机所产生模拟信号的实时A/D转换与向上位机传输; 若选用1394接口的相机,则无需图像采集卡。 [0013] The image acquisition card having CameraLink digital interface to the host data transfer rate is greater than 200MB / s speed data acquisition card, analog signals in real time A / D conversion and transmits the generated upper machine frame frequency high industrial camera ; if the camera 1394 to choose from, you do not need frame grabbers.

[0014] 所述激光测距仪为精度在0. Imm以内,检测距离小于100mm,开关频率大于500HZ, 具有RS485接口的单点激光测距仪;该测距仪控制接口简单,采样频率高,可以实现筛管筛丝与激光测振单元间距离的高精度距离检测。 [0014] The laser rangefinder within an accuracy of 0. Imm, detecting distance is less than 100mm, the switching frequency is greater than 500HZ, having a single point laser rangefinder RS485 interface; the range finder control interface is simple, high sampling frequency, the distance can be achieved between the wire mesh screen with the laser vibrometer high accuracy distance detection unit.

[0015] 所述光栅尺为准确度等级高于士0. 005mm的增量式光栅尺,可以实现直线运动位置的高精度检测,为测量不同型号筛管时图像采集单元的准确定位奠定基础。 [0015] The grating is a higher level of accuracy with disabilities 0. 005mm incremental encoders, the position is detected with high accuracy linear motion may be implemented for different types of measurement accuracy positioning screen image acquisition unit basis.

[0016] 所述上位机单元中的上位机为至少具有两个串口、一个1394 口、一个PCI插槽,系统内存大于2GB,支持Windows XP操作系统的工控机,具有较高的可靠性。 The [0016] PC PC unit having at least two serial ports, a 1394, a PCI slot, the system memory than 2GB, Windows XP operating system support for IPC, having high reliability.

[0017] 所述上位机单元具体实现过程如下: [0017] The host computer unit specific implementation process is as follows:

[0018] a.激光测振单元与成像对焦单元初始化:上位机单元设置激光测振单元的串口相关参数,连接激光测距仪,设置激光脉冲的发射频率;设定成像对焦单元的功能参数,所述功能参数包括控制串口号、波特率、进给速度,并根据当前所测筛管的型号,选择先期标定好的径向调整值; . [0018] a laser vibrometer and image focusing unit cell initializing: PC serial port parameters of the laser unit is disposed vibration unit connected to the laser rangefinder, laser pulse emission frequency is provided; functional parameter setting image focusing means, controlling the functional parameters include the serial number, baud rate, feed rate, and in accordance with the measured current screen model, select pre-calibrated radial adjustment value;

[0019] b.控制成像对焦单元到达指定对焦位置; . [0019] b controls the imaging unit reaches the specified focus-focus position;

[0020] c.图像采集单元初始化:设定采集通道,连接面阵工业相机;根据硬件配置及现场光照情况,结合实际采集到的筛管图像,下达相机的调参指令,获取高质量的缝隙放大成像;与此同时,设定缝隙检测中图像分割的阈值; . [0020] c-cell initializing image acquisition: setting acquisition channels connected to industrial area array camera; The hardware configuration and the scene lighting conditions, the actual acquired screen image, the parameter adjustment instruction issued by the camera, acquiring a high-quality slit magnification imaging; At the same time, setting a threshold value in image segmentation gap detection;

[0021] d.在检测过程中,上位机单元实时接收图像采集单元与激光测振单元上传的数据,以作进一步处理; [0021] d in the detection process, the PC unit receives the real-time image acquisition unit and the laser vibrometer data upload unit, for further processing;

5[0022] e.解算缝隙尺寸:上位机单元对采集到的图像予以实时显示,经过增强、去噪等前期处理,分析该帧图像上水平方向的灰度变化,进行图像分割,提取物条与缝隙在图像上的具体区域;依据激光测振单元的数据,调用相应的成像系数解算缝隙的实际物理尺寸,实时存储在Excel中;其中,成像参数因所测缝隙距图像采集单元的远近不同而不同,在装置初次安装使用时,用标定块予以标定,存储在上位机的成像参数库中; 5 [0022] e solver gap size: PC unit to be real-time display of the acquired image, after pre-processing enhancement, noise removal, etc., the analysis level gradation change direction frame image, image segmentation, extracts Article slit specific region on the image; according to the data of the laser vibrometer unit, call the appropriate imaging coefficient solver actual physical size of the gap in real time is stored in Excel; wherein the imaging parameters due to the measured gap from the image acquisition unit distance varies, when the device is first installation, to be calibrated with the calibration blocks, the imaging parameters stored in the database in the host computer;

[0023] f.计算缝隙加工是否在误差范围内,若超出误差范围,则不合格缝隙数增加一条。 [0023] f. Slits calculation process is within an error range, if beyond the error range, the number of slits increases a failure.

[0024] g.在线统计缝隙加工的不合格率,当不合格率大于此种型号筛管的不合格率阈值时,则上位机给出报警,提醒操作者作出决策;反之则进入下一步。 . [0024] g-line statistical failure rate slit processing, when the failure rate is greater than the failure rate of this type of screen threshold, then the host computer gives an alarm to alert the operator to make decisions; otherwise the next step.

[0025] h.判断绕丝筛管是否加工完毕,若加工完毕,装置停止工作,反之则进入第e步, 继续进行检测。 [0025] h. Determines whether the processing is completed wire wrapped screen, if the processing is completed, the apparatus stops working, otherwise the process proceeds to step e to continue testing.

[0026] 本发明与现有技术相比的优点在于: [0026] The advantages of the present invention compared to the prior art in that:

[0027] (1)本发明装置使用上位机单元统一控制各单元工作,采用面阵工业相机对筛管缝隙进行实时成像,上位机单元进行处理与结果显示,为无接触检测,因此检测方便,自动化程度高,可长时间工作,没有因人员疲劳导致出错的现象; [0027] (1) using the apparatus of the present invention, the PC unit collectively controls each unit of work, the gap of the screen image in real time using the industrial area array camera, the host computer unit for processing the results show, for the non-contact detection, thereby facilitating detection, high degree of automation, can work long hours without fatigue due to staff errors led to the phenomenon;

[0028] (2)本发明装置可以与实际绕丝筛管加工系统无缝对接,构成闭环生产控制,实时检测绕丝缝隙的加工质量,修正源头工艺参数,避免对原材料的浪费; [0028] (2) according to the present invention, the actual device can be a wire wrapped screen seamless processing system, a closed loop production control, the quality of real-time detection wire around the processing gap, the source of the correction parameters, to avoid the waste of raw materials;

[0029] (3)本发明装置使用面阵工业相机,在满足测量要求的前提下,可以通过改变相机的纵向分辨率,提高系统采样频率,避免了绕丝筛管在线生产时自身运动产生的成像模糊现象; [0029] (3) apparatus using an area array camera of the present industrial invention, meet the requirement under the premise of the camera by changing the vertical resolution, the sampling frequency to improve the system, to avoid their motion produced when a wire wrapped screen generated online image blurring;

[0030] (4)本发明装置利用显微镜头对微小缝隙放大成像,解算缝隙实际尺寸,因此检测精度达到士0. 3 μ m,高于手动筛规检测精度; [0030] (4) according to the present invention, apparatus using a microscope magnification imaging head of the small gap, the actual gap size resolver, the detection accuracy of disabilities 0. 3 μ m, the detection accuracy is higher than the regulation hand screen;

[0031] (5)本发明装置利用激光测振单元计算当前所测筛管缝隙与图像采集单元的距离,调用不同的成像系数进行缝隙实际值解算,有效解决了绕丝筛管在线生产时的径向振动问题; When [0031] (5) means for calculating the present invention, the slit image acquisition unit screen currently measured distance unit using a laser vibrometer, call different coefficients imaging slit actual value solver to effectively solve the wire wrapped screen production line vibration radial;

[0032] (6)本发明装置使用成像对焦单元来调整图像采集单元与激光测振单元的径向定位值,使得该装置适用于多种不同外径的绕丝筛管,装置的应用范围广。 [0032] (6) using the imaging apparatus according to the present invention, the focusing means adjusts the image acquisition unit of the laser vibrometer radial positioning means, so that the device is suitable for a variety of different outer diameters of wire wrapped screen, a wide range of applications of the device .

附图说明 BRIEF DESCRIPTION

[0033] 图1为本发明检测装置的系统结构图; [0033] FIG. 1 is a system configuration view of a detection device of the present invention;

[0034] 图2为本发明所用的标定块实际成像; [0034] FIG calibration actual imaging block 2 used in the present invention;

[0035] 图3为本发明装置的工作流程图; [0035] FIG. 3 is a flowchart of the device of the present invention;

[0036] 图4a和图4b为实际的绕丝筛管外观图; [0036] Figures 4a and 4b the actual wire wrapped screen Appearance;

[0037] 图5为本发明解算筛管缝隙值示意,其中图5a为实际筛管在图像采集单元中的成像,图5b为筛管缝隙图像阈值分割。 [0037] Figure 5 schematically value resolver slit screen of the present invention, wherein FIG. 5a actual imaging screen image acquisition unit, Figure 5b is divided into a slit screen image thresholding.

具体实施方式 detailed description

[0038] 如图1所示,本发明的绕丝筛管微小缝隙的非接触在线检测装置,其特征在于包括:图像采集单元1、激光测振单元2、成像对焦单元3及上位机单元4,其中 [0038] As shown, the screen wire around the small gap present invention a non-contact-line detection apparatus, characterized by a comprising: an image acquisition unit 1, a laser vibrometer unit 2, the imaging unit 3 and the focusing unit 4 PC ,among them

[0039] 图像采集单元1,实现对被测筛管5微小缝隙的真实放大成像,它包括面阵工业相 [0039] The image pickup unit 1 to achieve true zoom imaging screen measured the small gap 5, which comprises an area array with industrial

6机11、转接口12、显微镜头13、球积分光源14及图像采集卡15 ;其中面阵工业相机11与显微镜头13通过转接口12相连;球积分光源14罩在显微镜头13前端,均勻反射从底部发射的光线,使被测筛管5表面的照度均勻,缝隙边缘成像清晰;图像采集卡15通过数据线与面阵工业相机11连接,从面阵工业相机11获取被测筛管5的模拟图像,该模拟图像信号经A/ D转换传送给上位机单元4进行处理、存储和传输;图像采集单元1中的图像采集卡15安装在上位机单元4中的PCI插槽41中,图像采集单元1的其余部件则布置在成像对焦单元3上; 6 machine 11, switch interface 12, a microscope head 13, a ball integral light source 14 and an image acquisition card 15; wherein the connected area array industrial camera 11 and the microscope head 13 through the transfer interface 12; sphere integrating light source 14 cover 13 distal lens of the microscope, uniform reflected light from the bottom emission, the measured illuminance uniformity of the screen surface 5, forming sharp edges of the slit; an image acquisition card 15 through data line 11 is connected to area array camera industry, obtaining test screen 5 from the industrial plane array camera 11 analog image, the analog image signal by the a / D conversion unit is transmitted to the host computer for processing, storage and transmission 4; in 1 frame grabber image acquisition unit 15 is installed in the PC unit 41 in the PCI slot 4, the remaining components of an image pickup unit is disposed on the image focusing unit 3;

[0040] 激光测振单元2,用于精确测量当前所测筛管5位置与图像采集单元1的距离值, 它包括激光测距仪21、485/232转接口22及RS232串口线23,激光测距仪21测量出当前所测筛管5位置与图像采集单元1的距离值后通过485/232转接口22和RS232串口线23反馈给上位机单元4,从而辅助上位机单元4决策出当前图像采集单元1的成像系数,解决绕丝筛管实际在线加工过程中径向振动对成像规律的影响问题; [0040] Laser vibrometer unit 2, for accurate measurement of the current measured value from the screen 5 and the position of the image acquisition unit 1, which includes a laser rangefinder 21,485 / 232 interface 22 and the RS232 serial line 23, a laser rangefinder 21 measures the distance value after the screen 5 and the position of the current image acquisition unit 1 measured 485/232 transfer interface 22, and RS232 serial line 4 feedback 23, so as to assist the decision-making upper unit 4 to the host computer via this unit coefficient of the imaging image acquisition unit 1, the imaging laws address the impact of vibration about the actual radial line silk screen processing;

[0041] 成像对焦单元3,实现图像采集单元1及激光测振单元2的径向移动,从而实现不同型号筛管微小缝隙的高质量成像;它包括运动控制器31、交流伺服电机32、伺服驱动器33、高精度滚珠丝杠及相应联轴器34、光栅尺35、基座36、运动滑块37及可与图像采集单元1、激光测振单元2装配的连接装置38 ;其中运动控制器31为可编程逻辑控制器PLC,输出高速脉冲给交流伺服驱动器33,并通过信号转接器39接受来自于光栅尺35动尺读数头的信号;伺服驱动器33直接驱动交流伺服电机32的运行,进而带动高精度滚珠丝杠34转动,使得滑块37及装配其上的图像采集单元1和激光测振单元2发生平移,实现装置对不同外径筛管5的对焦成像功能; [0041] 3 image focusing means, image acquisition means 1 and the laser vibrometer radial movement means 2, different types of screens to achieve high quality imaging of the small gap; which includes a motion controller 31, servo motor 32, servo driver 33, and the corresponding high-precision ball screw coupling 34, grating 35, the base 36, and the movement of the slider 37 with the image acquisition unit 1, a laser vibrometer connecting device 38 assembled unit 2; wherein the motion controller 31 is a programmable logic controller PLC, high-speed pulse output to the AC servo drives 33, 35 and the movable grating scale signal by reading head adapter 39 receiving the signal from; transport servo driver 33 directly drives the AC servo motor 32, so as to drive the ball screw 34 is rotated with high precision, so that the slider 37 and the image pickup unit 1 which is assembled on a laser unit 2 and translational vibration occurs, means to achieve different outer diameters function focus imaging screen 5;

[0042] 上位机单元4,控制整个装置的运行,包括上位机硬件及控制软件,它分别通过计算机接口与上述三个单元通信,实现图像采集单元1中相机的参数设置、图像数据的获取、 分析与存储;激光测振单元2中测距仪的初始化设置与数据接收,及成像对焦单元3的定位控制;上位机单元4中还封装了缝隙的检测算法,综合上述各单元获取的信息进行绕丝筛管缝隙值的解算,缝隙相对误差的求取、不合格率统计,并提供图像显示、实时报警、数据入库功能。 [0042] The upper unit 4, controls the operation of the entire apparatus, including PC hardware and control software, which are three computer interface unit communicates with the through image acquisition unit carries out a parameter of the camera 1, image data is acquired, analysis and storage; vibrometer laser rangefinder unit 2 is provided with the initialization data received, and forming the focus position control unit 3; PC unit 4 also encapsulates the gap detection algorithm, each of the integrated information acquisition unit is wire wrapped screen value resolver slit gap is obtained relative error, failure rate statistics, and to provide an image display, real-time alarm, a data storage function.

[0043] 将各单元相关部件进行装配,连接好供电与信号线,首先进行整个装置关键部件的开发。 [0043] The relevant parts assembled units, connect the power supply to the signal line, the first key member to develop the entire apparatus. 为安装在上位机PCI插槽中的图像采集卡15安装驱动程序,基于驱动程序提供的API接口函数,在VC++6. 0开发环境中实现对图像采集卡15的系列操作,包括设置连接相机类型、单帧分辨率、像元深度、板上内存大小、控制信号源等参数,以及图像采集线程的开启与结束;与此同时,将CameraLink接口16虚拟成串口,遵循面阵工业相机11的底层协议, 即可编程实现上位机单元4对图像采集单元1中面阵工业相机11的参数设置。 An image acquisition card installed in the PC 15 in the PCI slot to install the driver, the driver based on the API provides interface functions, 6.0 development environment implemented series of operations of the image acquisition card 15 in VC ++, it includes a connector camera type, single frame resolution, pixel depth, the size of on-board memory, the control parameters, and the open end of the image acquisition thread signal source; Meanwhile, the virtual interface 16 into serial CameraLink follow industrial area array camera 11 the underlying protocol, the host computer can be programmed to achieve an image acquisition unit 4, a parameter setting unit industrial area array camera 11. 本发明在面阵工业相机11控制信号源上采用内部触发方式,一旦开启了图像采集线程,图像采集卡15即以固定的时钟频率获取面阵工业相机11所采集的图像信号,上位机单元4在图像采集线程中对图像采集卡15内存中的数据进行实时拷贝,以位图的形式在上位机单元4中进行实时显示。 The present invention uses an internal trigger on an area array of industrial 11 controls the signal source camera, once open image acquisition thread, frame grabber 15 that is an image signal of an area array industrial camera 11 acquired at a fixed clock frequency, the host unit 4 real-time copying of data in the memory 15 in the image acquisition card image acquisition thread, in the form of a bitmap in the real-time display of the host computer unit 4. 依据激光测距仪21的底层控制指令,对激光测振单元2进行开发,上位机单元4 以串口控制发送相应命令字方式实现对测距仪21的参数设置与数据接收。 The laser rangefinder 21 control instructions underlayer, the laser vibrometer developing unit 2, the host computer transmits a control unit 4 to the respective command word serial manner to receive parameter data rangefinder 21. 对成像对焦单元3的PLC运动控制器31进行内部梯形图编程,使用高速脉冲指令产生运动所需的电平信号,输入触点接收来自于信号转接器39的光栅尺35信号,对直线位置进行精确闭环检测;通过循环扫描方式,PLC控制器31内部程序检测输入触点、数据寄存器、内部继电器等状态的变化,执行相关的指令,进而实现成像对焦单元3的定位控制;上位机单元4与PLC控制器31的通信遵循PLC封装的串口通信协议,数据传输采用ASCII码的形式,由PLC对指令进行相应响应。 The motion of the image focusing unit 3 PLC controller 31 internally ladder program, a high-speed pulse generation command signal desired level of movement, contact receiving input signals from the grating 35 to the signal adapter 39, the position of a straight line accurately detected loop; by scanning cycle, the controller 31 changes the internal state of the PLC detects contact input data register, the internal relays, etc., execute instructions associated, so as to realize image focusing control unit 3 is positioned; upper unit 4 serial communication protocol PLC controller 31 and the package follows the PLC, data transmission in the form of ASCII code, in response to the corresponding instruction by the PLC.

[0044] 在装置关键部件成功集成开发的基础上,进行装置的前期标定,主要包括两个工作: [0044] On the basis of the key components of the device on the successful integration development, upfront calibration apparatus, comprising mainly two tasks:

[0045] 对不同型号的绕丝筛管5进行成像对焦单元3径向对焦位置的标定。 [0045] 3 radial calibrated focus-focus position of the imaging unit 5 wire-wrapped screens of different types. 安装好筛管后,通过上位机4控制成像对焦单元3微调进给,实现标定块的清晰成像,记录下此时光栅尺35的检测值;更换不同型号的筛管5,重复上述工作,即可完成系列筛管的对焦位置标定工作。 After installing the screen, the image focusing unit 4 controls the PC 3 Micro feed, to achieve a clear image of the calibration block to record the value, as measured grating 35; replace different types of screen 5, above operation is repeated, i.e., series of screens to be completed by the focus position calibration work.

[0046] 对图像采集单元1的成像系数进行标定。 [0046] The image forming coefficient acquisition unit 1 calibration. 本发明选择带有标定线的标定块作标定实验;制作含有(单位mm)间隔标定线的标定块,要求前端面为光滑平面,布置在显微镜头13的前端,保证标定块前端面与镜头光轴垂直,控制成像对焦单元3径向进给,实现标定块的清晰成像(如图2),读取此时激光测振单元2得到的测量值Cli ;若得到标定线间隔像素数为N,则成像参数Kki取为标定线实际物理宽度与标定线间距成像点数的比值;有: The present invention selects the calibration block with the calibration line for calibration experiments; calibration blocks made containing (in mm) intervals calibration line, requires the front end surface is a smooth plane, the microscope is arranged at the front end of the head 13, to ensure that the calibration block and the lens surface of the front end light vertical axis, the focusing unit 3 controls the imaging radial feed, to achieve a clear image of the calibration block (FIG. 2), read measurements obtained Cli case 2 laser vibrometer unit; the number of pixels obtained when the nominal line spacing is N, taking the ratio of the pitch of imaging parameters Kki imaging point calibration line and the actual physical width of the calibration lines; are:

[0047] [0047]

[0048] 其中Aw代表标定线的间距。 [0048] Representative Aw wherein the calibration line spacing.

[0049] 由于筛管的径向振动幅度差值在士5mm间,采取相对运动策略,固定标定块不动, 取0. Imm的步长,在士5mm范围内微调成像对焦单元3,进行离散标定,计算不同成像距离下的Kki值。 [0049] Since the vibration amplitude of the difference between the radial persons 5mm screen, relative movement taking strategy, fixed calibration immobilize, 0. Imm of steps taken, trimming image focusing means 3 in the range 5mm disabilities, discrete calibration, Kki calculated values ​​at different image distances. 每一组数据(屯,Kei)记录了确定振动位置的成像系数值,多次实验,即可完成成像参数库的标定工作。 Each set of data (Tun, Kei) recorded vibration imaging position determining coefficient values, multiple experiments, imaging parameters to complete the calibration work library.

[0050] 如图3所示,本发明装置的整个工作流程具体如下: [0050] As shown in FIG 3, the entire apparatus of the invention work flow as follows:

[0051] 第一步,确认部件供电、信号线正确连接,装置上电,成像对焦单元3自动归零,等待上位机单元4指令; [0051] The first step in the confirmation component supply, signal cable is properly connected to the power means, the auto-zero image focusing unit 3, the host computer waits for an instruction unit 4;

[0052] 第二步,激光测振单元2与成像对焦单元3初始化:利用上位机单元4设置激光测振单元2的串口相关参数,连接激光测距仪21,设置激光脉冲的发射频率;设定成像对焦单元3的功能参数(控制串口号、波特率、进给速度等),并根据当前所测筛管5的不同型号, 选择事先标定好的径向调整值; [0052] The second step, the laser vibrometer unit 2 and image focusing unit 3 initializes: PC unit 4 is provided using a laser vibrometer relevant parameters of the serial interface 2, connected to the laser range finder 21, the laser pulse emission frequency is provided; provided focus function parameters given imaging unit 3 (control serial port, baud rate, feed rate, etc.), and measured in accordance with the current screen 5 different models, select pre-calibrated radial adjustment value;

[0053] 第三步,成像对焦单元3到达指定对焦位置; [0053] The third step, the imaging unit 3 reaches the specified focus-focus position;

[0054] 第四步,图像采集单元1初始化:设定采集通道,连接面阵工业相机11 ;根据硬件配置及现场光照情况,结合实际采集到的筛管图像,依据面阵工业相机11内部封装的协议,下达相机的调参指令(包括拍摄模式、帧频、曝光增益及曝光时间等),获取高质量的缝隙放大成像;与此同时,设定缝隙检测中图像分割的阈值; [0054] The fourth step, the image acquisition unit 1 initializes: acquisition channel is set, the camera 11 connected to the industrial area array; The hardware configuration and the scene lighting conditions, the actual acquired image screen, based on the industrial plane array camera 11 inside the package protocol, the parameter adjustment instruction issued by the camera (including a shooting mode, the frame rate, the exposure gain and exposure time, etc.), an enlarged image acquired quality slit; At the same time, setting a threshold value in image segmentation gap detection;

[0055] 第五步,启动在线检测按钮,图像采集单元1与激光测振单元2实时将数据传给上位机单元4,供上位机单元4作进一步处理。 [0055] The fifth step, start button line detection, the image acquisition unit 1 and unit 2 laser vibrometer data in real time to the host unit 4, the upper unit 4 for further processing. 实际的绕丝筛管5,如图4所示,由于筛管绕丝与缝隙的光反射性能不同,使得其在面阵工业相机11像敏面上感光不同,物条区段成像灰度值较大,而在缝隙处成像的灰度值较小,因此会形成错落有致的条纹图像,如图5a所示。 The actual wire wrapped screen 5, 4, since the screen wire around the different light-reflective properties of the slot, so that its industrial area array camera 11 in the image-sensitive surface of the photosensitive different, the stripes of the imaging section gradation value larger, and the gradation value of the image in the small gap, thus forming a patchwork fringe image shown in Figure 5a.

[0056] 第六步,解算缝隙尺寸。 [0056] The sixth step, the resolver gap size.

8[0057] 在检测过程中,面阵工业相机11以一定的帧频连续采集图像,上位机单元4进行实时显示;对图像经过增强、去噪等前期处理,分析该帧图像上水平方向的灰度变化,进行图像分割,提取物条与缝隙在图像上的具体区域,如图5b所示,有: 8 [0057] In the detection process, industrial area array camera 11 continuously at a constant frame rate of image acquisition, the PC display unit 4 in real time; after enhancement, noise removal and other pre-processing on the image, the frame image analysis horizontal direction gradation change, image segmentation, extracts the strip of specific regions with slits on the image, shown in Figure 5b, are:

[0059]其中, [0059] wherein,

[0060] Si为检测开始后所测第i个缝隙的图像测量值(单位为像素); [0060] Si is the i-th slot after the start of the measured measurement value detection image (in pixels);

[0061] St为图像分割的灰度阈值,当被测筛管确定后,由于球面积分光源(14)的功率及安放位置已经确定,该阈值为一确定的值;装置初次使用时,可现场实验,将&标定出,预先存储在上位机软件4中。 [0061] St gradation image segmentation threshold value, determined when the screen test, the surface integral since the light source (14) and the placement of the power has been determined, the determination of a threshold value; means for primary use, field experiments, & calibrate the pre-stored in the PC software 4.

[0062] F(Gt)表示缝隙区段成像灰度在Gt灰度阈值下的像素点数。 [0062] F (Gt) represents the number of pixels forming the gray zone in the gap Gt gradation threshold value.

[0063] 根据当前激光测振单元2的数据,经下列公式解算,得出实际的缝隙值,实时存储在Excel中: [0063] The data in the current laser vibrometer unit 2 by solving the following equation, the actual gap value obtained in real time is stored in Excel:

[0064] Li = S1Kei (3) [0064] Li = S1Kei (3)

[0065] 其中Li为第i个缝隙的实际值;成像参数Kki通过公式⑴计算得出,已经在前期标定中解算出结果,只需据激光测振数据调用成像参数库中的相应值即可。 [0065] where Li is the actual value of the i th slot; Kki imaging parameters calculated by the equation ⑴, solutions have been calculated in the pre-calibration results, simply laser vibrometer according to respective values ​​of the imaging parameters of a data call to the library .

[0066] 第七步,计算缝隙加工的相对误差 [0066] The seventh step, the relative error calculation processing slot

[0067] 对于当前检测的缝隙值,有相对误差判别式: LL [0067] For the current value of the detected gap, relative error discriminant: LL

[0069] 其中,LtS当前所测筛管缝隙的理论设计值,ε为所要求的相对误差阈值,根据产品加工精度的要求不同而不同,可以根据实际情况设定。 [0069] wherein, the current screen slit LtS measured theoretical design value, the required [epsilon] is the relative error threshold, according to the requirements of product processing accuracy varies, can be set according to the actual situation.

[0070] 若(4)式成立,则不合格缝隙的检测条数N。 [0070] If (4) is satisfied, the number of slits detected substandard N. ut增加一条。 ut add a.

[0071] 第八步,在线统计缝隙加工的不合格率 [0071] The eighth step, on-line processing of statistical failure rate gap

[0072] 在相对误差求取的基础上,有缝隙不合格率计算公式: [0072] On the basis of the relative error is obtained on the slit failure rate is calculated:

N N

[0073] -^-X 100% > ψ (5) /V [0073] - ^ - X 100%> ψ (5) / V

1 * total 1 * total

[0074] 其中,N。 [0074] where, N. ut为不合格缝隙的检测条数,Nt。 ut is the number of rejects the detected slits, Nt. tal为检测缝隙的总条数,Ψ为检测不合格率阈值,由筛管实际使用方提出。 tal the total number of detected slits, [Psi] to detect failure rate threshold, the screen presented by the actual consumer. 若(5)式成立,则本发明装置则给出报警,提醒操作者作出决策;反之则进入下一步。 If (5) is satisfied, the apparatus of the present invention is given alarm to alert the operator to make decisions; otherwise the next step.

[0075] 第九步,判断绕丝筛管5是否加工完毕。 [0075] The ninth step, it is judged whether the processing wire wrapped screen 5 is completed.

[0076] 若加工完毕,则装置停止工作,反之进入第六步,继续进行检测。 [0076] When processing is completed, the apparatus stops working, otherwise proceed to Step 6, then detects.

[0077] 本发明未详细阐述部分属于本领域公知技术。 [0077] The present invention belongs to the part not elaborated techniques known in the art.

9 9

Claims (9)

  1. 一种绕丝筛管微小缝隙的非接触在线检测装置,其特征在于包括:图像采集单元(1)、激光测振单元(2)、成像对焦单元(3)及上位机单元(4),其中:图像采集单元(1),实现对被测筛管(5)微小缝隙的真实放大成像,它包括面阵工业相机(11)、转接口(12)、显微镜头(13)、球积分光源(14)及图像采集卡(15);其中面阵工业相机(11)与显微镜头(13)通过转接口(12)相连;球积分光源(14)罩在显微镜头(13)前端,均匀反射从底部发射的光线,使被测筛管(5)表面的照度均匀,缝隙边缘成像清晰;图像采集卡(15)通过数据线与面阵工业相机(11)连接,从面阵工业相机(11)获取被测筛管(5)的模拟图像,该模拟图像信号经A/D转换传送给上位机单元(4)进行处理、存储和传输;图像采集单元(1)中的图像采集卡(15)安装在上位机单元(4)中的PCI插槽中,图像采集单元(1)的其余部件则布置在成像对焦 One kind of fine wire wrapped screen slit-line non-contact detecting apparatus, comprising: an image acquisition unit (1), a laser vibrometer unit (2), image focusing means (3) and the upper unit (4), wherein : image acquisition unit (1), the real enlarged image of the implement (5) minute test slot screen, comprising the industrial area array camera (11), switch interface (12), microlenses (13), a light source integral ball ( 14) and an image acquisition card (15); wherein the connected area array industrial camera (11) and the microlens (13) by a transfer interface (12); spherical integrating light source (14) cover the front end of the microscope head (13), uniform reflectance from the bottom of the light emitted from the screen under test (5) illumination surface uniformly, the slit forming sharp edges; frame grabber (15) connected via a data line and industrial area array camera (11), from the industrial area array camera (11) Get test screen (5) analog image, the analog image signal by the a / D conversion transmission processing, storage and transmission to the host computer unit (4); frame grabber image acquisition unit (15) (1) PCI slot installed in the host computer unit (4), the image acquisition unit (1) is disposed in the remaining image focusing member 元(3)上;激光测振单元(2),用于精确测量当前所测筛管(5)位置与图像采集单元(1)的距离值,它包括激光测距仪(21)、485/232转接口(22)及RS232串口线(23),激光测距仪(21)测量出当前所测筛管(5)位置与图像采集单元(1)的距离值后通过485/232转接口(22)和RS232串口线(23)反馈给上位机单元(4),从而辅助上位机单元(4)决策出当前图像采集单元(1)的成像系数,解决绕丝筛管实际在线加工过程中径向振动对成像规律的影响问题;成像对焦单元(3),实现图像采集单元(1)及激光测振单元(2)的径向移动,从而实现不同型号筛管微小缝隙的高质量成像;它包括运动控制器(31)、交流伺服电机(32)、伺服驱动器(33)、滚珠丝杠及相应联轴器(34)、光栅尺(35)、基座(36)、运动滑块(37)及与图像采集单元(1)、激光测振单元(2)装配的连接装置(38);其中运动控制器(31)为可编程逻辑控制器PLC,输出 Element (3); a laser vibrometer unit (2), for accurate measurement of (5) the position of the image acquisition unit (1) is measured from the current value of the screen, which includes a laser rangefinder (21), 485 / Interface 232 (22) and a RS232 serial line (23), a laser rangefinder (21) measured by the current measurement screen (5) after the position of the image acquisition unit (1) by a distance value transfer interface 485/232 ( 22) and a RS232 serial line (23) to the host device unit (4), to assist the host computer unit (4) decision that the current image acquisition unit (1) imaging coefficients, to solve the actual line wire wrapped screen processing path radial image focusing means (3), image acquisition unit (1) and a laser vibrometer unit (2) moves, in order to achieve different models small gap screen high quality imaging;; the impact of vibration on the imaging laws it comprising a motion controller (31), motors (32), servo drives (33), and the corresponding ball joint (34), grating (35), the base (36), movement of the slider (37 ) and the image acquisition unit (1), a laser vibrometer unit (2) connected to the mounting means (38); wherein the motion controller (31) is a programmable logic controller PLC, output 高速脉冲给交流伺服驱动器(33),并通过信号转接器(39)接受来自于光栅尺(35)动尺读数头的信号;伺服驱动器(33)直接驱动交流伺服电机(32)的运行,进而带动滚珠丝杠(34)转动,使得滑块(37)及装配其上的图像采集单元(1)和激光测振单元(2)发生平移,实现装置对不同外径筛管(5)的对焦成像功能;上位机单元(4),控制整个装置的运行,它分别通过计算机接口与上述图像采集单元(1)、激光测振单元(2)和成像对焦单元(3)通信,实现图像采集单元(1)中相机的参数设置、图像数据的获取、分析与存储;激光测振单元(2)中测距仪的初始化设置与数据接收,及成像对焦单元(3)的定位控制;上位机单元(4)中还封装了缝隙的检测算法,综合上述各单元获取的信息进行绕丝筛管缝隙值的解算,缝隙相对误差的求取、不合格率统计,并提供图像显示、实时报警、数据入库功能。 High-speed pulse to the servo drive (33), and receiving grating signal (35) movable scale reading head is derived from the signal adapter (39); servo driver (33) is directly driven Operation AC servo motor (32), Further driven ball screw (34) is rotated, so that the slider (37) and the image pickup unit on its mounting (1) and the laser measuring transducer unit (2) translation occurs, means to achieve different outer diameters screen (5) focus imaging function; host computer unit (4), controls the entire operation of the device, which are through the computer interface to the image acquisition unit (1), a laser vibrometer unit (2) and the image focusing means (3) communication, image acquisition unit (1) in the camera setting parameters, the image data acquisition, analysis and storage; laser vibrometer unit (2) is provided with the rangefinder initialization data received, and the image focusing means (3) positioning control; PC means (4) further encapsulates detection algorithm slits, each of the integrated information obtained by means decompresses the wire wrapped screen slot count value, the gap is obtained relative error, failure rate statistics, and to provide an image display, real-time alarm , data warehousing capabilities.
  2. 2.根据权利要求1所述的一种绕丝筛管微小缝隙的非接触在线检测装置,其特征在于:所述的面阵工业相机(11)采用2kXlk以上分辨率,30f/s以上帧频,单像元横向尺寸大于5um的黑白相机。 The one of said non-contact-line wire wrapped detecting apparatus as claimed in claim small gap, wherein: the industrial area array camera (11) using the above 2kXlk resolution, 30f / s frame rate than , as white camera single element of a transverse dimension greater than 5um.
  3. 3.根据权利要求1所述的一种绕丝筛管微小缝隙的非接触在线检测装置,其特征在于:所述显微镜头(13)为放大倍率在XI. 5以上,最大兼容CCD靶面在2/3英寸以上,工作距离在50-100mm间的C 口光学镜头。 1 according to one of the non-contact-line wire wrapped detecting apparatus as claimed in claim small gap, wherein: said microscope head (13) is a magnification XI 5 or more, the maximum compatible CCD plane. 2/3 inch or more, the working distance between the optical lens port C of 50-100mm.
  4. 4.根据权利要求1所述的一种绕丝筛管微小缝隙的非接触在线检测装置,其特征在于:所述球积分光源(14)为具有碗状内壁以及顶部具有仿同轴照射的白色高亮度光源。 1 according to one of the non-contact-line wire wrapped detecting apparatus as claimed in claim small gap, wherein: said light integrating sphere (14) having a coaxial white artificial irradiation bowl having an inner wall, and a top high brightness light source.
  5. 5.根据权利要求1所述的一种绕丝筛管微小缝隙的非接触在线检测装置,其特征在于:所述图像采集卡(15)为具有CameraLink数字接口(16)的数据到主机传输速率大于200MB/S的高速采集卡;若选用1394接口的相机,则无需图像采集卡。 1 according to one of the non-contact-line wire wrapped detecting apparatus as claimed in claim small gap, wherein: said image acquisition card (15) having CameraLink digital interface data (16) to the host transfer rate greater than 200MB / S of the high speed data acquisition card; selection if the camera 1394, no image acquisition card.
  6. 6.根据权利要求1所述的一种绕丝筛管微小缝隙的非接触在线检测装置,其特征在于:所述激光测距仪(21)为精度在0. Imm以内,检测距离小于100mm,开关频率大于500HZ, 具有RS485接口的单点激光测距仪。 1 according to one of the non-wire-wrapped screens small gap contact line detection apparatus as claimed in claim wherein: said laser range finder (21) within an accuracy of 0. Imm, detecting distance is less than 100mm, the switching frequency is greater than 500HZ, having a single point laser rangefinder RS485 interface.
  7. 7.根据权利要求1所述的一种绕丝筛管微小缝隙的非接触在线检测装置,其特征在于:所述光栅尺(35)为准确度等级高于士0. 005mm的增量式光栅尺。 1 according to one of the non-contact-line wire wrapped detecting apparatus as claimed in claim small gap, wherein: said grating (35) is higher than the incremental graduation is 0. 005mm disabilities accuracy classes ruler.
  8. 8.根据权利要求1所述的一种绕丝筛管微小缝隙的非接触在线检测装置,其特征在于:所述上位机单元(4)中的上位机为至少具有两个串口、一个1394 口、一个PCI插槽(41),系统内存大于2GB,支持Windows XP操作系统的工控机。 1 according to one of the non-contact-line wire wrapped detecting apparatus as claimed in claim small gap, wherein: said host computer means the host computer (4) having at least two serial ports, a 1394 , a PCI slot (41), the system memory is larger than 2GB, support for the Windows XP operating system IPC.
  9. 9.根据权利要求1所述的一种绕丝筛管微小缝隙的非接触在线检测装置,其特征在于:所述上位机单元(4)具体实现过程如下:a.激光测振单元(2)与成像对焦单元(3)初始化:上位机单元(4)设置激光测振单元(2)的串口相关参数,连接激光测距仪(21),设置激光脉冲的发射频率;设定成像对焦单元(3)的功能参数,所述功能参数包括控制串口号、波特率、进给速度,并根据当前所测筛管(5)的型号,选择先期标定好的径向调整值;b.控制成像对焦单元(3)到达指定对焦位置;c.图像采集单元(1)初始化:设定采集通道,连接面阵工业相机(11);根据硬件配置及现场光照情况,结合实际采集到的筛管图像,下达相机的调参指令,获取高质量的缝隙放大成像;与此同时,设定缝隙检测中图像分割的阈值;d.在检测过程中,上位机单元(4)实时接收图像采集单元(1) 1 according to one of the non-contact-line wire wrapped detecting apparatus as claimed in claim small gap, wherein: said host computer means (4) specific implementation process is as follows:. A laser vibrometer unit (2) initialization and image focusing means (3): host computer means (4) is provided a laser vibrometer unit (2) parameters related to serial, connected to the laser range finder (21), set the transmit frequency of the laser pulses; setting image focusing means ( 3) functional parameters, the control function parameter comprises serial number, baud rate, feed rate, depending on the model and the measured current screen (5), the selected pre-calibrated radial adjustment value;. b controls the image forming focusing means (3) reaches the specified focus sites; c image acquisition unit (1) initialization: setting acquisition channels connected to industrial area array camera (11); the hardware configuration and the scene lighting conditions, the actual screen images collected , issued camera parameter adjustment instruction, acquiring an enlarged image of high quality slit; at the same time, setting a threshold value in image segmentation gap detection;. d detection process, the host computer unit (4) received in real time an image acquisition unit (1 ) 激光测振单元(2)上传的数据,以作进一步处理;e.解算缝隙尺寸:上位机单元(4)对采集到的图像予以实时显示,经过增强、去噪等前期处理,分析该帧图像上水平方向的灰度变化,进行图像分割,提取物条与缝隙在图像上的具体区域;依据激光测振单元(2)的数据,调用相应的成像参数解算缝隙的实际物理尺寸, 实时存储;f.计算缝隙加工是否在误差范围内,若超出误差范围,则不合格缝隙数增加一条。 Laser vibrometer unit (2) to upload data, for further processing; E resolver gap size: host computer means (4) to be displayed in real time on the captured image, through the enhancement, noise removal and other pre-processing, the analysis frame. gradation change the horizontal direction on the image, image segmentation, extracts particular region on the strip of the slot in the image; laser vibrometer according to the data unit (2) invokes the appropriate imaging parameters resolver actual physical size of the gap in real time storage;. F calculation processing gap is within the error range, if beyond the error range, the number of slits increases a failure. g.在线统计缝隙加工的不合格率,当不合格率大于此种型号筛管(5)的不合格率阈值时,则上位机单元(4)给出报警,提醒操作者作出决策;反之则进入下一步。 . G slit processing line statistical failure rate, when the failure rate is greater than this model screen (5) failure rate threshold, the host computer unit (4) gives the alarm to alert the operator to make decisions; otherwise the next step. h.判断绕丝筛管(5)是否加工完毕,若加工完毕,装置停止工作,反之则进入第e步,继续进行检测。 H. Analyzing wire wrapped screen (5) whether the processing is completed, if the processing is completed, the apparatus stops working, otherwise the process proceeds to step e to continue testing.
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CN102155986B (en) 2011-03-07 2012-05-23 中国航空工业集团公司北京长城计量测试技术研究所 Optical frequency metering and testing device for laser vibration measurer
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CN102735611A (en) * 2012-06-21 2012-10-17 宁德新能源科技有限公司 Method for detecting resistance welding strength of lithium ion battery, and apparatus thereof
CN103322932A (en) * 2013-07-04 2013-09-25 中国科学院电工研究所 Turn-to-turn interval indication device of superconducting coil and winding turn number control method
CN103322932B (en) * 2013-07-04 2015-12-09 中国科学院电工研究所 Interturn gap indication superconducting coil winding apparatus and method for controlling the number of turns
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CN103913122A (en) * 2014-04-22 2014-07-09 济南大学 Workpiece length measurement device
CN103994718B (en) * 2014-05-27 2017-02-15 天津大学 Micro electronic element is positioned on the microscope identification method and computer vision
CN105043280A (en) * 2015-05-18 2015-11-11 北京理工大学 Rotating center measuring apparatus and spacing measuring method thereof
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CN107450474A (en) * 2017-08-17 2017-12-08 中国石油大学(华东) Dual-trapezoid slotted sieve tube plasma machining production line intelligence comprehensive fault diagnosis system
CN107450474B (en) * 2017-08-17 2018-03-30 中国石油大学(华东) Double trapezoidal screen pipe plasma processing line intelligent integrated fault diagnosis system
CN107422720A (en) * 2017-08-31 2017-12-01 中国石油大学(华东) Double-trapezoid shaped slotted screen pipe plasma processing production line intelligent comprehensive fault diagnosis method
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